fourier series in the interval (0,2l)
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Answered by
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We assume that the function
f
(
x
)
is piecewise continuous on the interval
[
−
L
,
L
]
.
Using the substitution
x
=
L
y
π
(
−
π
≤
x
≤
π
)
, we can transform it into the function
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